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1、祈使句是英语的基本句型之一，表达说话人对对方的叮嘱、劝告、请求或命令等，往往有表示请求、命令、希望、禁止、劝告等意思。 祈使句一般没有主语，实际上是省略了主语“You”。句末用感叹号或句号，用降调朗读。,Grammar: The Imperatives(祈使句）,祈使句,肯定式：Come here, please. Be patient, please. Lets go by bus. 否定式：Dont touch it. Dont be lazy. Never play with fire! 答语： Yes, I will. / No, I wont. 反意问句：will you/ shal
2、l we 句式： 祈使句or/and +主+will (wont) /can (cant).,祈使句的肯定式,祈使句的肯定句式有三种形式，即 1). Do型( 以行为动词原形开头) 例如: Sit down 坐下! Stand up起立！ 2). Be型(以be开头), 例如: Be quiet安静！ 3). Let型（以let开头） 例如: Let me help you. 让我来帮助你。,祈使句的否定式,祈使句的否定结构是以“Dont动词原形”开头 Dont go there, please 请别去那儿。 Dont be late 不要迟到。 Dont let him in 不要让他进来。
3、 Dont let the water run into the room. 不要让水流进屋里。,注意： Lets型祈使句，其否定式也可用 Lets not 如： Lets not have rest 咱们别休息了。 Lets not sit here! 我们不要坐在这儿！,祈使句的答语,Tom: Remember to turn off the light ! John: I will. Tom: Dont forget your homework! John: I wont. Tom：Dont come to school late again! John: Sorry, I wont.,
4、祈使句的反意疑问句,反意问句 Open the door, will you? Lets go by bus, shall we? Let us leave at once, will you?,一个重要句型,祈使句， and/then 主can/will do 祈使句， or 主语 cannot/ wont do Examples: 1) Think hard, and you will come up with an idea. 2) Think hard, or you will have no way out. 转换 1) If you think hard, you will com
5、e up with an idea. 2) If you dont think hard, you will have no way out.,祈使句转换为间接引语,1）“Come here, Tom!” John said. John told Tom to go there. 2) “ Dont pick flowers,” he said to us. He told us not to pick flowers.,随堂练习,1. He told me _for school. A. dont be late B. dont late C. not to be late D. is no
6、t late 2. Please dont make a noise! _.I will be as quiet as a mouse. A. Yes, I wont. B. No, I wont. C. No, I will. D. Yes, I will.,3. Stop talking and _ to me. I have some news for you. A. listening B. listen C. to listen D. listened 4. _ to the English program more often, and you will be able to ge
7、t it. A. If you listen B. Listening C. when listen D. Listen,5. _ English with you is a lot of fun! A. Learn B. Learning C. If I learn D. When learning 6. Let us stay here for two days, _? A. will you B. shall we C. dont you D. arent we,1. Tom did his homework _. He made lots of mistakes. (care) 2.
8、Tom fell off his bike and hurt himself _ (严重地) 3. Mr. Li cooks well. He is a good _ (cook) 4. What _ (别的）would you like? 5. The accident _ (happen) yesterday. 6. We try our best to stop accidents from _ (发生）at school.,carelessly,seriously,cook,else,happened,happening,Fill in the blanks with the prop
9、er words,7. Santa Claus has nine _ (驯鹿）to pull his sleigh. The _ (九) is called Rudolph, a red-nosed reindeer. 8.He didnt succeed until he tried the_ (十二)time. 9. People often hurt themselves by _(fall) off chairs. 10. Be careful with _ (刀子）. 11. Dont jump from too high a _ (高度). 12. Please _ (关掉) th
10、e light before you leave.,reindeer,twelfth,falling,knives,height,turn off,ninth,请根据括号内的要求, 改写下列句子, 每空一词(含缩写)。 1. Get up earlier, or you will miss the early bus. (改为同义句) _ you_ get up earlier, you will miss the early bus.,If,dont,2. Before he told me about the accident, I knew nothing about it. (同上)
11、I_ know_ about the accident_ he told me. 3. While I was trying to sleep, there was a knock at the door. (同上) I was trying to sleep_ someone _ at the door.,didnt,anything,until,when,knocked,4. I havent decided when I shall leave.(改为简单句) I havent decided_ _ leave. 5. The job might match your skills. (改为否定句) The job_ _ match your skills.,might not,when to,Great Job!,Thank You!,
